<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表单提交</title>
</head>
<body>
    <!--   action表示动作，处理此表单的服务程序 metho代表方法-->
    <from action="login.PHP" method="post">
        用户名：<input type="text" name="username123456">
        <br>
        密码：<input type="password" name="password">
        <br>
        <input type="submit" value="提交">
    </from>
</body>
</html>